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Finding the Fourth Proportional to 800,920.72, 1,105,273.53 and 433,397.86

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Solution

The fourth proportional to 800,920.72, 1,105,273.53 and 433,397.86 is: 598,090.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    800,920.72 : 1,105,273.53 = 433,397.86 : x
  2. Step 2: Convert to fraction form
    800,920.72/1,105,273.53 = 433,397.86/x
  3. Step 3: Cross multiply
    800,920.72x = 1,105,273.53 × 433,397.86
  4. Step 4: Simplify right side
    800,920.72x = 479,023,184,296.34
  5. Step 5: Solve for x
    x = 479,023,184,296.34/800,920.72
  6. Step 6: Final answer
    x = 598,090.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.